ACDelco Belt Tensioner - 10229114 Part #: 10229114 Line: ACD ACDelco Belt Tensioner 1 Year Limited Warranty Color: Black Contact Surface: Smooth Backside Flanged: No Material: Steel Number Of Pulleys: 1 Pulley Outside Diameter (mm): 91mm Pulley Width (mm): 30mm Belt Type: Serpentine Pulley Width (in): 1-3/16 Inch Pulley Outside Diameter (in): 3-5/8 Inch Number Of Mounting Holes: 1 Pulley Inside Diameter (mm): 12mm Show More Show Less